Minor fix

src/blenderbim/blenderbim/bim/export_ifc.py

@@ -86,7 +86,10 @@ class IfcExporter:
 
     def sync_deletions(self):
         for ifc_definition_id in IfcStore.deleted_ids:
-            product = self.file.by_id(ifc_definition_id)
+            try:
+                product = self.file.by_id(ifc_definition_id)
+            except:
+                continue
             ifcopenshell.api.run("root.remove_product", self.file, **{"product": product})
 
     def sync_object_placements(self):

src/blenderbim/blenderbim/bim/module/geometry/operator.py

@@ -373,6 +373,7 @@ class OverrideDelete(bpy.types.Operator):
         for obj in context.selected_objects:
             if obj.BIMObjectProperties.ifc_definition_id:
                 element = file.by_id(obj.BIMObjectProperties.ifc_definition_id)
+                IfcStore.deleted_ids.add(element.id())
                 if getattr(element, "FillsVoids", None):
                     self.remove_filling(element)
                 if element.is_a("IfcOpeningElement"):
@@ -383,7 +384,6 @@ class OverrideDelete(bpy.types.Operator):
                 elif getattr(element, "HasOpenings", None):
                     for rel in element.HasOpenings:
                         self.delete_opening_element(rel.RelatedOpeningElement)
-                IfcStore.deleted_ids.add(element.id())
             bpy.data.objects.remove(obj)
         return {"FINISHED"}